NO VILLOUS development known as the SMOOTH CHORION --> Related to the DECIDUA CAPSULARIS.

The fetal surface of the placenta is characterized by ...?

Fetal surface gross appearance?

The fetal surface has a smooth, shiny, light-blue or blue-pink appearance (because the amnion covers the fetal surface) + 5-8 large chorionic (fetal) blood vessels should be apparent.

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Velamentous placenta occurs ...?

When the umbilical (fetal) blood vessels abnormally travel through the amniochorionic membrane BEFORE reaching the placenta proper.

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If the umbilical (fetal) blood vessels cross the internal os, a serious condition called ... exists.

VASA PREVIA.

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Why is vasa previa a serious condition?

If one of the umbilical (fetal) blood vessels ruptures during pregnancy, labor, or delivery, the fetus will bleed to death.

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Placenta previa occurs when ...?

The placenta attaches in the LOWER PART of the uterus, covering the internal os.

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The placenta normally implants in the ... wall of the uterus.

POSTERIOR-SUPERIOR.

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Complications of placenta previa?

1. Uterine (maternal) blood vessels rupture during the LATER PART of pregnancy as the uterus begins to gradually DILATE.2. The mother may BLEED TO DEATH.3. The fetus will also be placed in jeopardy due to compromised blood supply.